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Finding the Fourth Proportional to 363,831.03, 545,728.32 and 139,299.03

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Solution

The fourth proportional to 363,831.03, 545,728.32 and 139,299.03 is: 208,941.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,831.03 : 545,728.32 = 139,299.03 : x
  2. Step 2: Convert to fraction form
    363,831.03/545,728.32 = 139,299.03/x
  3. Step 3: Cross multiply
    363,831.03x = 545,728.32 × 139,299.03
  4. Step 4: Simplify right side
    363,831.03x = 76,019,425,619.53
  5. Step 5: Solve for x
    x = 76,019,425,619.53/363,831.03
  6. Step 6: Final answer
    x = 208,941.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.